[KAYSON INC. As one of Iran's leading EPC and D&B contractor, Kayson provides services in Project Development, Project Management, Engineering, Procurement, Construction, Financing, Investment & Utilities Operation and Maintenance operation. Over the past 40 years we have developed the capability of carrying out complex, multidiscipline projects for the core sectors of the Oil, Gas & Industry, Housing & Buildings, Railway Transportation Systems, Water & Wastewater and Civil.]